Installed the 3" Magnaflow exhaust on my 68 Vert.

[68GT500KR_Vert]

Check it out - had to shim the vert plate - making sides for it and going to cut it up a little to allow cooling. fits fine.

http://www.stangnet.com/mustang-forums/656043-68-gt500kr-vert-restomod-project-3.html